Burner



Oct. 29, 1940. M. ROADS v 2,219,532

BURNER Filed June 16, 1939 /0 y 9 A? 6 5 /d r I /6 24 K s/ 2 h: I I v ifh v a II} I I I J56 I 5; S 2

IVNVENTEIR MIKEL Rams ITTY.

Patented Oct. 29, 1940 t l UNITED STATES.

. BURNER MikelR-oads, Bell, Calif.

LPATENT. OFFICE! Application June16, 1939, Serial No. 279,463

1 Claim." (c1. za-es) This invention relates to burners and the like forconsuming inflammable liquids, especially those classed as low gradeliquid fuelssuch as lubricant oil drainings from automobile engine crankcases and the like.

Means are provided for conducting the liquid fuel to the burner whichcomprises. an open end pipe mounted with a floating valve. The valveopens to allow fuel to pass through the opening 10' when an internalpressure within the pipe forces the valve upwardly. The fuel burnsaround the periphery of the valve-head and creates a spreading flamewhich produces a great deal of heat. The efliciency of the fuelcombustion is relatively 193- high which is evidenced by the fact thatlittle smoke results.

The pipe has an appreciable area exposed to the heat of the combustionchamber and is effective in aiding the more complete burning of the low20 grade oils.

The burner and its associate parts are extremely simple and free ofmoving parts which might bind or interfere with its efficiency. The

burner is very economical to make and use and is 25 adaptable to nearlyall types of stoves, furnaces, fire boxes and the like.

An object of the invention is to provide a liquid fuel burner which isvery simple in construction and extremely economical to make and use,and

30 which is also adapted for easy installation in nearly all kinds andtypes of fire boxes, stoves and the like.

Another object is to present a unit for burning low grade fuel in a firebox that is economical to 35 manufacture.

Still another object is to provide a burner in which the fuel ejector isautomatically controlled by gravity operative means that issubstantially frictionless.

40 Other objects, advantages and features of -my invention will appearfrom the accompanying drawing, the subjoined detailed description, thepreamble of these specifications and the appended claim.

Applicant is about to illustrate and describe one of the forms of hisinvention in order to teach one how to make, use and vend the same, butit is to be understood that the drawing and description thereof are notto limit the invention in any sense 50 whatsoever, except as limited bythe appended claim.

In the drawing: Fig. 1 shows the invention in elevation with partsbroken away.

55 Fig. 2 shows the invention in plan view.

Fig. 3 shows a cross section taken substantially along the line 33 ofFig. 1.

Fig. 4 is a detail shown in vertical section.

The stove includes spaced apart cylindrical units indicated in generalby the numerals l and 5" 2, the unit .I being the outer one and the unit2 being the inner one. The outer unit comprises a cylindrical wall 3, anintegral disc-like bottom wall 4 and a similar integral top wall 5. Tothe bottom wall is attached a plurality of angled legs 6 for supportingthe entire structure above the floor 1. The top wall 5 is provided witha flanged opening 8 and a flue opening 9. The flue opening has a shortflue pipe ID, the top of which is adapted to be connected with the usualflue pipes (not shown) that pass through the top of the building forexhausting the undesirable gases of combustion. A side door-way openingII at the side of the stove is closable by a door l2 which is hinged tothe wall 3 in any suitable manner.

The inner unit 2 comprises a cylindrical wall 13 having an integraldisc-like bottom l4 and a similar top wall l5. The top wall has anopening Hi to provide passage of the flue gases to the flue pipe in anda side opening ll in register with the opening ll. These openings areprovided with annular walls 18 and I9 to prevent entrance of flue gasesinto the space 20 between the spaced apart walls of the units 1 and 2.The top wall [5 is also provided with another opening 2| which issmaller than the opening 8.

Extending downwardly through the openings 8 and 2|, is a pipe 22 havingboth ends open. In-

tegral with the top of the pipe is a flanged collar 23 of suflicientsize to snugly lit the openings as shown.

Within the stove is a burner 24 including an upright fuel. pipe 25, anda horizontal pipe 26 which passes through the walls 3 and I3 of thestove via packing glands 21. A pipe 28 continues the pipe line to thebottom of a reservoir 29 wherein is kept the fuel oil. The reservoir orcontainer 29 is supported along the side of the stove by the bracketshelf 30 which is anchored to the stove wall 3 by bolts'3l. A sheet ofasbestos 32 prevents undue heating of the container 29 so that the oiltherein will not rise dangerously near its flash point. A valve 33inserted in the pipe line is the means for controlling the fuel supplyto the burner. 5

The burner 24 consists of the top portion of the erect pipe 25 .and thefree valve'element 35. This valve element comprises a disc head section35 and an integral depending stem section 36. The head 35 should have adiameter about twice that 5 fuel and also the force thereof under normalworking conditions. The chamber 37 is the fire box section of the stoveand is of sufficient size to provide room for paper or other combustiblematerials used for starting the burner.

Operatiom Through the side door, paper, excelsior or the like is placedin the bottom of the fire box around the pipe 25; this priming materialis set afire to warm the pipe 25 and also for the purpose of providing aflame close to the burner 24. The valve 33 is then turned on to allowthe fuel oil in the tank 29 to flow by gravity into the pipe 25 andoutwardly therefrom as its pressure lifts the valve head 35. The flamesfrom the primer ignite the oil around the bottom of the valve head whereit burns rapidly in the configuration of a saucer. As the pipe 25becomes hotter, the oil burns still more rapidly with a slight roar, theburner now is functioning perfectly and at a high efficiency. No smokeor odors whatever pass upwardly through the heater pipe 22, but muchheat finds its way therethrough. Over the top of the pipe 22, variouscooking equipment may be provided so that the stove will be useful as acooker as well as a heater.

2,219,532 of the pipe bore and the stem should preferably No smoke orodors rise upwardly through the pipe 22 for the reason that the flame ofthe burner 24 is fan shaped and spreads well beyond the bottom openingof'the pipe; thus fuel not completely burned, passes upwardly around theouter side of this pipe to the flue. The pipe 22, however, becomes veryhot, due to hot combustion gases passing in contact with its outer side,and effectively conducts heat to the top of the stove where it is usefulfor cooking purposes. When the stove is completely closed, so that allthe air to support combustion enters the pipe 22, then obviously, therewould be not the slightest pressure diiferential to cause smoke andodors to flow upwardly in the pipe 22.

I claim:

A stove comprising a fire chamber having top, bottom and side walls, adown draft tube depending from the top wall and terminating inan openend near the center of the chamber, a pipe having' a valve-at its topand extending upwardly from the bottom of the chamber to a point nearthe center of the chamber but spaced from and beneath the open end ofthe tube, said valve comprising a fiat disc-like head having a dependingstem which fits loosely into the open upper end of the pipe, said headhaving a horizontal area greater than the opening of the pipe andsmaller than the opening of the down draft tube, said open end of thetube and valve at the top of the pipe forming a fuel burning unit, andmeans connected to the pipe to supply fuel thereto.

MIKEL ROADS.

